To set up a trust fund bank account, you bring three things to a bank appointment: a certification of trust, unexpired government-issued photo ID for every trustee, and a tax identification number for the trust. That last piece depends on the trust type. A revocable living trust uses the grantor’s Social Security number while the grantor is alive; an irrevocable trust needs its own Employer Identification Number from the IRS before you walk in.1IRS. Instructions for Form SS-4 The rest is document review, a signature card, and funding the account in the trust’s exact legal name.
Start With the Trust Type
Whether your trust is revocable or irrevocable controls which tax ID number the account uses and how income gets reported to the IRS. Get this wrong and you’ll either be turned away or set up under the wrong number.
A revocable living trust, the common estate-planning vehicle, is treated as an extension of the grantor for tax purposes during the grantor’s lifetime. The account uses the grantor’s Social Security number, and any interest or other income is reported on the grantor’s personal return. The IRS instructions for Form SS-4 confirm that a grantor trust does not need its own EIN as long as the trustee gives the grantor’s name and taxpayer identification number to all payers.1IRS. Instructions for Form SS-4
An irrevocable trust is a separate legal entity. It must have its own EIN, and it files its own tax return. A revocable trust also needs an EIN once the grantor dies, because at that point it becomes irrevocable and can no longer ride on the grantor’s Social Security number.1IRS. Instructions for Form SS-4 Federal regulations treat any trust as a nonindividual entity that uses an EIN when it must furnish a taxpayer identification number, so the only real question is when that moment arrives.2eCFR. 26 CFR 301.6109-1 – Identifying Numbers
Apply for an EIN If the Trust Needs One
If your trust is irrevocable, or if the grantor of what was a revocable trust has died, apply for the EIN before your bank appointment. The IRS online application at IRS.gov/EIN issues the number immediately. The person applying needs a valid Social Security number or existing EIN, and the trust must have a principal place of business in the United States.1IRS. Instructions for Form SS-4
The online form asks for the trust’s legal name exactly as it appears in the trust document, the grantor’s name and taxpayer ID (listed as the “responsible party”), and the trustee’s name. Fax and mail applications on Form SS-4 also work, but the mail route can take up to four weeks.
Gather the Documents the Bank Will Ask For
Certification of Trust
The core document is a certification of trust, sometimes called a memorandum or abstract of trust. It’s a condensed version of the full trust agreement that gives the bank what it needs to verify authority without exposing private terms like who the beneficiaries are or what they receive.3LII / Legal Information Institute. Certification of Trust Most states have adopted rules based on the Uniform Trust Code that let banks rely on the certification instead of demanding the full instrument.
A workable certification of trust includes:
- Confirmation the trust exists and the date it was created
- Identity of the grantor
- Names and addresses of all current trustees
- The trustee’s powers, specifically the authority to open and manage financial accounts
- Whether the trust is revocable or irrevocable
- If there is more than one trustee, whether all must act together or any one can act alone
The certification leaves out the dispositive terms. The bank has no right to see who gets what. Trustees usually obtain this document from the attorney who drafted the trust. A bank may ask for specific excerpts naming the trustee and spelling out trustee powers, but it cannot demand the entire trust document.3LII / Legal Information Institute. Certification of Trust
Photo ID for Every Trustee
Each trustee named on the account presents unexpired government-issued photo identification, typically a driver’s license or passport. Under the Bank Secrecy Act and federal customer identification rules, banks verify the identity of anyone with control over a legal entity’s funds. For a revocable trust, the bank may also need to verify the grantor’s identity if the grantor and trustee are different people.4Financial Crimes Enforcement Network. Interagency Interpretive Guidance on Customer Identification Program Requirements Under Section 326 of the USA PATRIOT Act
Application Details
Have the following ready before you sit down with the banker:
- The tax ID: grantor’s SSN for a revocable trust, EIN for an irrevocable one
- The trust’s full legal name exactly as written in the trust document, such as “The Smith Family Revocable Trust, dated January 15, 2025”
- Names and addresses of all current trustees, and successor trustees if the bank asks
- The initial deposit, which must meet whatever minimum the bank sets
The legal name matters more than it looks. The account title, the bank’s records, and every future transaction reference this name. A small discrepancy between the application and the trust document can hold up the account.
The Bank Appointment
Most banks require an in-person visit to open a trust account. The banker has to review your certification of trust, confirm trustee authority, and match ID documents, which online systems generally can’t do. Book a dedicated appointment with someone who handles fiduciary or business accounts. Not every branch representative is trained for this.
During the appointment, the banker enters your information and produces the account agreement. The document that matters most is the signature card. It establishes who can sign checks, authorize wires, and manage day-to-day operations. If the trust names multiple trustees, the signature card reflects the signing rule from the trust document: any one trustee acting alone, or all of them signing together.
After the signature card is finalized, the bank runs a final compliance check and issues the account and routing numbers. Some banks finish the same day; others take a few business days.
Fund the Account in the Trust’s Name
Once the account exists, move money in through wire transfer, check, or electronic transfer from an existing account. Every deposit must be payable to the trust by its full legal name, not to the trustee personally. A check made out to “John Smith” does not belong in the trust account, and a check payable to the trust does not belong in John Smith’s personal account.
This is not just tidy bookkeeping. Mixing personal money with trust money, called commingling, is a fiduciary breach. Courts generally presume a trustee who mixes funds intended to misuse them, and the trustee carries the burden of proving otherwise. A beneficiary can ask a court to reverse a tainted transaction, and in serious cases the court can remove the trustee. Clear titling on every deposit and withdrawal is the easiest defense.
Co-Trustees and Signing Authority
When two or more trustees serve together, the trust document controls how they operate at the bank. Many trust agreements let any one trustee handle routine transactions while requiring agreement from all trustees, or a majority, for larger decisions. Under the Uniform Trust Code framework in most states, co-trustees who can’t agree unanimously may act by majority vote.
The bank looks to the certification of trust for the signing rule and sets up the signature card to match. If the trust requires all co-trustees to sign, no one trustee can move money alone. If it allows any trustee to act, each has independent access. Ambiguity in the certification here creates real problems when someone needs to act quickly, so confirm this language before you go in.
FDIC Coverage for Trust Deposits
Trust deposits at FDIC-insured banks are insured on a different formula than personal accounts. Coverage runs per beneficiary: each trust owner gets up to $250,000 for each eligible beneficiary named in the trust, capped at $1,250,000 when five or more beneficiaries are named. The math is owners times beneficiaries times $250,000. A single-owner trust with three beneficiaries is insured up to $750,000 at one bank. The FDIC combines all trust deposits, revocable and irrevocable, that a single owner holds at the same institution when it calculates coverage.5FDIC. Trust Accounts For large balances, spreading deposits across multiple banks raises the total insured amount.
What Comes After the Account Is Open
Two obligations follow the account setup and are worth knowing about now.
First, tax filing. If the trust earns $600 or more in gross income during the tax year, the trustee must file Form 1041 with the IRS. For a calendar-year trust, the filing deadline is April 15 of the following year. This obligation applies to irrevocable trusts. A revocable trust with a living grantor reports income on the grantor’s personal return instead, so Form 1041 doesn’t come into play until the trust becomes irrevocable. When an irrevocable trust distributes income to a beneficiary, the trustee also issues that beneficiary a Schedule K-1 by the same filing deadline.6IRS. 2025 Instructions for Form 1041
Second, trustee succession. When a trustee dies, the successor trustee named in the trust document takes over the bank account by presenting a certified copy of the death certificate, the certification of trust showing them as successor, and their own photo ID. The bank updates the signature card and transfers authority. If the trust was revocable and used the deceased grantor’s Social Security number, the successor trustee applies for an EIN at that point, because the trust is now irrevocable.1IRS. Instructions for Form SS-4